The death toll has been established at 2,996 people, including the 19 hijackers, making it the worst terrorist attack in American history. While the international community condemned the attacks, some Islamicfundamentalists in the Middle East viewed them as part of a legitimate jihad.[note 2] As a result, the United States invaded Afghanistan to eliminate al-Qaeda and bin Laden and to remove the Taliban regime (in retaliation for harboring bin Laden). The U.S. military subsequently occupied that country until December 2014, making it the longest war in America's history.

Besides unspeakable horror, this plan also unleashed a plethora of conspiracy theories, especially after President George W. Bush announced plans to intervene in Afghanistan (at the time, harboring al-Qaeda's leadership) and later Iraq (which had no involvement at all in 9/11).[2] 9/11 conspiracy theorists, known collectively as "truthers", make varying assertions, including claiming the attacks were condoned by the U.S. government; carried out by the government as a false flag operation as a pretext for launching the War on Terror; claiming that Israel did the attacks to increase American support; claiming the attacks were masterminded by an international Jewish conspiracy; or claiming they were carried out as part of an ongoing strategy to bring about the New World Order or the Illuminati.

The story, as pieced together by government and civilian authorities, is that 9/11 was a followup to the failed Bojinka plot created by al-Qaeda under the auspices of founder Osama bin Laden. On the morning of September 11, nineteen men, mostly from Saudi Arabia, hijacked four planes out of Boston, New York City, and Washington, D.C., and, without giving away their intentions, redirected the planes on kamikaze missions towards four American landmarks on the east coast: the Twin Towers of the World Trade Center, the Pentagon, and an unknown fourth location theorized by some to have been the White House or the Capitol building (the last plane was brought down through passenger interference in an open field outside of Shanksville, Pennsylvania). The attacks resulted in the complete collapse of the twin towers (now known as Ground Zero), heavy damage to one side of the Pentagon,[note 3] and the deaths of just under 3,000 people, some 400 of whom were police, firefighters (with 3/4 of the responder casualties), and EMS workers in and around New York alone.

Later analysis showed that the World Trade Center towers, constructed as a stack of floors anchored between the building's facade and a central steel girder cage, had much of their steel structure weakened (not melted) by large amounts of burning jet fuel, a lot of which had been atomized on impact; a third tower on the site named WTC 7 suffered serious structural damage by falling debris, burned uncontrollably for over 7 hours, [note 4] and collapsed several hours later of its own accord. The Pentagon, where the impact site was in an area of the building that had been recently renovated and not fully reoccupied, had heavy but highly compartmentalized damage and comparably light casualties. The cleanup took several months, complicated by fire under the WTC debris and the need to recover the bodies of the dead.

Did explosions heard or seen in New York suggest the WTC buildings were deliberately destroyed? This contention, known as the "controlled demolition" theory, claims that the WTC buildings (either WTC 7 or the entire complex) were brought down in a stealth demolition, similar to that of large buildings. The problems with this are, to say the least, numerous, and we'll deal with them in little bits.

Rebuttal: Many truthers, such as Swiss Historian Dr. Daniele Ganser, have pointed out that the 9/11 Commission report, which was supposed to deliver a complete description of all the events occurring on that day, omitted the news that WTC 7 collapsed a few hours later due to fire. Truthers use this fact to empower their theory that the U.S. Government wants to hide key events that may look suspicious for the general public, and shed light on many of the other (apparent) inconsistencies of the events of 9/11, such as the BBC's reporter Jane Standley reporting live that WTC 7 had collapsed 20 minutes before it actually collapsed. Truthers generally think like this: Because WTC 7 isn't even mentioned, it must be Bush who did it. The rebuttal of this ridiculous claim is, however, rather simple: the Commission did not consider a collateral damage engineering disaster, which occurred hours after the attack, to be relevant. Instead, WTC 7 was covered in hundreds of pages of engineering reports prepared by NIST. Boom, baby! How do you feel now, Alex Jones? To sum it up: The 9/11 Commission report and the NIST reports remain reliable, at least, for us Untruthers.

Rebuttal: This is pretty much completely impossible. Planned implosions require months of preparation, including tearing apart walls to place charges, removing extraneous material from the building, laying miles of carefully measured detonation cord, and the intentional damaging of support columns.

On top of this, the WTC was bombed in 1993, meaning that there were routine checks from bomb squads, including sniffer dogs. Not only would these explosives have to be laid at night in secret, but they would also somehow be able to beat animals specially trained to detect them.

Larry Silverstein (the new leaseholder for the WTC) had been going to the Twin Towers' "Windows on the World" restaurant (there were no survivors on this level) to dine and meet with his new tenants; he had been doing this straight since July 26, 2001. But on 9/11, he didn't go because he claimed that his wife had made a dermatologist appointment for him.[3] Many truthers also point out that, in the interview where he is asked where he was on 9/11, he appears to be showing signs of lying.[4]

Rebuttal: It is very likely he was indeed simply going to a dermatologist appointment. Out of the thousands of people working at the site during the day, many dozens at any one time would have been on holiday, off sick, or simply slacking on September 11 (a good half dozen well-known celebrities were involved in and avoided a potential end in the attacks[5]). That one of these happened to be the owner isn't remarkable. There are plenty of important traders who did die in the attack; by the logic that one escaped suggests a conspiracy, the fact that many died should discredit it, right?

Also going against the idea of advanced knowledge is how Neil David Levin, the head of the Port Authority of New York and New Jersey (which presumably would be "in" on any conspiracy), was killed on 9/11; while dining in Windows on the World, no less.[6] If there was advance knowledge, why was Silverstein informed while Levin wasn't?

It's been repeatedly reported that Larry Silverstein had insured the Twin Towers a year earlier, and it is more than "coincidental" that this insurance covered terrorist attacks. Further, Silverstein had numerous legal disputes that aimed to increase the payout by arguing that there were two separate attacks. To a first approximation, this was successful and Silverstein managed to claim approximately $4.6 billion.

Rebuttal: What conspiracy theorists don't mention about this is that the total cost of the towers was significantly in excess of this — the insurance value was way below what it should have been. Most of the legal wrangling after the fact was also due to the insurance contracts being incomplete. The total cost of the attack would be in the region of $7 billion or more, leaving a considerable loss once the relatively measly insurance payout was claimed. With too low an insurance value and less-than-solid contracts, literally none of the insurance-based activities seem to point to the actions of people who knew exactly what was going to happen in advance. If it was an insurance scam, it was the worst ever.[7]

We've already noted that the World Trade Center had already been bombed once before in 1993, and that several major terror plots against U.S. landmarks had been uncovered since then. In light of this, an anti-terrorism insurance policy would appear to be an entirely logical purchase.

The basic quote you see most often is (Newsday, September 12, 2001[8]):

Daria Coard, 37, a guard at Tower One, said the security detail had been working 12-hour shifts for the past two weeks because of numerous phone threats. But on Thursday, bomb-sniffing dogs were abruptly removed.

"Today was the first day there was not the extra security," Coard said. "We were protecting below. We had the ground covered. We didn't figure they would do it with planes. There is no way anyone could have stopped that."

Rebuttal: Note that it is extra security in response to the phone threats that was removed. The standard level of bomb-sniffing dogs was still present, and in one case, a dog was crushed when the tower collapsed.[9] Even if all bomb dogs had been present, they would’ve had to notice explosive charges which would’ve had to been implanted months before the attack. And there is no indication that the security detail noticed anything unusual during the months leading up to September 11th.

Rebuttal: This comes primarily from two miscommunications. The first was by the BBC, who broadcast an erroneous report that WTC 7 had collapsed while the building could still be seen standing through the window of their New York studio.[10] The second was an evacuation order ("pull it") that went out shortly before the building, badly damaged in the collapse of the main towers and on fire, collapsed of its own accord. According to the National Institute of Standards and Technology's (NIST) 2006 Federal Building and Fire Safety Investigation of the World Trade Center Disaster report, the reasons for the WTC 7 collapse include:

Debris from the collapse of WTC 1, which was 370 feet to the south, ignited fires on at least 10 floors in the building at its south and west faces. However, only the fires on some of the lower floors — 7 through 9 and 11 through 13 — burned out of control. These lower-floor fires — which spread and grew because the water supply to the automatic sprinkler system for these floors had failed — were similar to building fires experienced in other tall buildings. The primary and backup water supply to the sprinkler systems for the lower floors relied on the city's water supply, whose lines were damaged by the collapse of WTC 1 and WTC 2. These uncontrolled lower-floor fires eventually spread to the northeast part of WTC 7, where the building's collapse began.

... [T]he thermal expansion of building elements such as floor beams and girders, which occurred at temperatures hundreds of degrees below those typically considered in current practice for fire-resistance ratings; significant magnification of thermal expansion effects due to the long-span floors in the building; connections between structural elements that were designed to resist the vertical forces of gravity, not the thermally induced horizontal or lateral loads; and an overall structural system not designed to prevent fire-induced progressive collapse.[11]

Although it wasn't completely obvious to the untrained eye at the time, WTC 7 had been seriously compromised by a 20-story gash in one corner facing Ground Zero, and by the time the evacuation order was given was visibly sagging. Conspiracy theorists have also tried to claim that "pull" is standard jargon within the demolition industry to fire off demolition charges within the building; demolition experts have denied this; the usual term would be "shoot it" or "blow it." "Pulling" refers to a procedure of attaching hauser cables to a building and using heavy vehicles to pull it over, something that would have been fairly easy for observers to detect.[note 5]

The towers fell in their own footprint; if they collapsed from metal fatigue they should have been all over the place[edit]

Rebuttal: While the idea of a giant building toppling over like a felled tree is popular in fiction, in reality the structure is designed to bear its weight straight down and in no other direction; throwing a massive building severely out of equilibrium would cause it to fall almost vertically, no matter what direction the initial force was applied from. (It is possible to fell a tall structure like a tree by selectively removing large amounts of support at one side or corner, near the base, but this requires a specific, well-prepared, and overt demolitions plan and either the intent to do so or a horse-doctor's dose of failure.)

In the case of the WTC, the upper floors detached and fell through lower undamaged sections, which can be clearly seen until they're obscured by dust and smoke. This falling mass would be too large for any one floor below it to stop or substantially redirect. NIST concluded that:

The collapse was initiated in the impact and fire floors of the WTC towers and nowhere else; and

The time it took for the collapse to initiate (56 minutes for WTC 2 and 102 minutes for WTC 1) was dictated by a) the extent of damage caused by the aircraft impact, and b) the time it took for the fires to reach critical locations and weaken the structure to the point that the towers could not resist the tremendous energy released by the downward movement of the massive top section of the building at and above the fire and impact floors.[12]

Based on observations of the collapses as they happened and hundreds of experts' analysis of the building site and materials, the NIST was able to consider and reject other possible explanations for large buildings collapsing in their own footprints. The first is the theory that damage to the WTC floor systems caused their progressive collapse, known as the "pancake theory."[12] The second is the theory that the Twin Towers were destroyed by controlled detonation. Neither theory matches the observation that each building appeared undamaged except at its top until it collapsed. The NIST concluded that damage to perimeter support columns initiated the detachment of the floors at and above the fire and impact floors, which subsequently fell into and through the towers. The claim that a building damaged by metal fatigue cannot collapse vertically does not square with observations of the collapses as they happened, nor the conclusions of experts evaluating the effects of physical damage to and the weakening by unusually high temperatures of critical building structures. WTC 1, 2 and 7 were not the first steel-framed structures to ever collapse from fire.[13]

In addition, the buildings did not fall onto their footprints: they left substantial debris scattered across the entire WTC complex site, damaging or destroying almost all of the surrounding buildings, mostly with large pieces of the external aluminum cladding forced outwards by the descending mass of the floors. The damage to WTC 7 was actually caused by debris from WTC 1, 370 feet away. A controlled demolition would presumably try to avoid such behavior.

You can see flashes all over Building 7 as the demo charges fire off[edit]

Rebuttal: You can see flashing... sort of, but it isn't an explosion. What you see is window glass popping out as the floors collapse and compress the air inside. The sun is momentarily reflected in each pane of glass as it falls.

Rebuttal: This is based on a few pictures of vertical beams that had been sheared off by recovery workers. Although a thermite reaction is highly exothermic, it is nearly impossible to effectively channel it sideways to cut a vertical beam, since it tends to pour straight down as it burns.[note 6]

Some creative truthers have suggested the use of "thermite straps"; given that thermite is generally a powder delivered from a cone-shaped cup, it's not clear that such a device is even possible, much less practical. This was later amended to thermate, a variation which includes sulfur, and appeared when there were chemicals found that matched what was found in the debris. However, such claims ignore the natural occurrence of these chemicals, do not match the chemical signatures that were found in the debris, and do not have corresponding traces of two major byproducts from thermate, aluminum oxide[note 7] and barium nitrate.[14]

Moreover, the thermite reaction is highly exothermic. Supposed evidence of thermite use is the presence of unreacted thermite in the WTC debris. This, however, comes as close to falsifying the hypothesis of thermite use as one can reasonably get: any place containing significant amounts of elemental aluminum and iron oxide (unreacted thermite), yet not far higher amounts of aluminum oxide and elemental iron (the reaction products), can be safely assumed to be not even close to where a thermite reaction recently occurred. This criticism has been "answered" by claiming that the unreacted "nanothermite" is indeed merely a trace residue. But this would require attaching some 100 metric tons[note 8] of thermite to the WTC buildings' structure, in hundreds or even thousands of small packages, with nobody noticing. And even if that were true, the corresponding amount of reacted thermite has simply failed to turn up. Finding thermite educts yet failing to find the appropriate amount of thermite products turns the supposed "proof" of thermite use into a quite robust refutation of thermite use.

In any case, "unreacted thermite" is composed (in bulk) of elemental aluminum and iron oxide. Commercial aircraft contain enormous amounts of aluminum, and the WTC was an aluminum-clad, steel-cored building. If an airliner crashes at high speed into a large steel-frame building, causing an enormous explosion, fire, and building collapse, we can expect to find aluminum and iron oxide, as well as aluminium oxide and metallic iron, in the debris without any thermite charges being required to explain it.

Thermite would not be a practical for demolition of the World Trade Center. The thermite would have spontaneously detonated at well under 1000° F. and would not have been controllable; no signal receiving device could have survived the fires and continued to receive the destruct command. [15]

A more recent truther claim is that traces of red-gray chips and iron-rich microspheres in the WTC rubble are best explained by thermite. This is held as their "smoking gun." A study of the dust from Ground Zero contradicts this: "There is no evidence of individual elemental aluminum particles of any size in the red/gray chips..."[16] The chips are epoxy resins. More specifically, after further study, the red/gray chips were found to be Laclede Standard Primer by the late polymer chemist Ivan Kminek who demonstrated they have the same chemical composition, identical XEDS spectra, and nearly identical ignition point.

Explosions coming out the windows of the towers are indications of an explosive demolition[edit]

Rebuttal: What happens when you squeeze a concertina? These side-jets of air and dust were not really explosions as such but debris being expelled from the buildings as the floors pancaked on top of each other. There is a lot of air in a quarter-mile-tall office building, and when compressed it has to go somewhere.

Add to that, the Twin Towers were full of water in water mains, toilets, sinks, and beverage machines. Water heated to boiling temperatures expands violently, and if contained, it expands explosively. Water has a high heat capacity which usually precludes rapid heating to boiling temperatures, but the heat of burning jet fuel will force water to heat rapidly to boiling that causes explosions of such objects as unopened soft-drink cans or whiskey bottles. Such explains many of the explosions that survivors heard.

The "pyroclastic flows" of dust indicate that explosives must have been used[edit]

Rebuttal: A pyroclastic flow is a movement of hot gas. In the context of a volcano, it is usually hot gases containing hot dust and other chunks spreading out. In the context of WTC, these flows were claimed to be the cloud of dust that dispersed during collapse and when the towers hit the ground.

Aside from not being hot enough to qualify as a pyroclastic flow (see volcanoes and shuttle launches), most claims try linking it with the controlled demolition theory. The only thing this debris flow indicates is a fast vertical compression that caused air inside the building to push dust outward over a large area. The same flows can also be seen during controlled demolitions but usually much smaller than what happened at WTC.

It has been estimated that the total mass of sheetrock in the internal walls was on the order of 1000 tons (US). An enormous cloud of white dust is, therefore, not entirely surprising or unexplainable.

Molten steel was found in the basement seven weeks later and jet fuel can't melt steel beams.[edit]

Rebuttal: There is no documented evidence of the presence of actually-melted steel at ground zero. The molten material noted in the 9/11 Commission report was "slag," not a molten metal. Most of the reports of "molten steel" found at ground zero were merely references to obviously red-hot solid steel. Even if they actually found "molten" metal, aluminum (which the planes were made out of) melts well under the temperature of jet fuel (pure aluminum melts at 660° C, jet fuel burns around 980° C[17] going up to +2,000 °C[18]). In addition, the mix of jet fuel, plastics, rugs, curtains etc. may burn hot enough to melt aluminum. (This can be demonstrated by placing an empty aluminum soda can on top of an ordinary campfire.)

Additionally, the melting point of steel is within the range of 1425-1540° C,[19] well outside the temperatures recorded at Ground Zero in the weeks following the attacks. What conspiracy theorists fail to note is that steel thermally expands while it remains strong and thus fire rapidly destroys uninsulated steel structures, and steel begins to lose its structural integrity (and red hot steel itself burns in air or in the presence of steam) at well below its melting point, or 700-820° C, well within temperatures recorded at Ground Zero in the weeks following the attacks). Meanwhile, molten steel is not typically found at the site of buildings that have actually been demolished using "explosives" to sever columns. Also, the first law of thermodynamics prevents even the super hot molten product of thermite charges from remaining molten long after thermite ignition. Therefore, whatever molten materials were observed at ground zero in the weeks following the collapses, that molten material was not originally present and molten at the time of the collapses (it began to melt after the collapses, not before the collapses).

That all being said, a 767 Family plane can carry up to 90,000 liters of fuel in its hull. It is estimated the two planes had about 28,000 Liters left in their tanks which is spread all over the hull from the wings to the fuselage (for ballast and balance control). The crash and shredding of the plane hardware caused the fuel to ignite almost instantly. Since it was not a controlled burn it is likely to hit the highest end of the combustion scale at its core, causing simultaneous ignition of anything around that was combustible and causing severe damage to load bearing pillars.

Rebuttal: This is moot: any fireproofing that was there was blasted or torn off the core by the initial impact and explosion. Asbestos protection (of any kind) would've not only proven useless, but would have also been dispersed into the air when the buildings collapsed.[23]

The buildings were full of asbestos, and this was the least expensive way to get rid of it[edit]

Rebuttal: This contradicts the previous claim. The argument is that if Larry Silverstein had removed the asbestos from the towers in the proper fashion, it would have cost him a huge amount of money, and officially demolishing the building would have been nearly impossible under New York City laws. So when he overheard that the powers that be were plotting to crash a couple planes into his towers, like any good tycoon he sensed an opportunity (asbestos removal paid for by the government!), not a threat (the government wants to destroy my building and they expect me to be on board?).

This is one of the few bases that truthers provide as a reason to plant explosives in a building that's going to be hit by planes: the towers had to go away completely, with no chance of being rebuilt.

The Empire State Building was hit by an airplane and survived; why not the WTC?[edit]

Yeah, innit weird how one of these couldn't do as much damage as a Boeing 767?

On July 28, 1945 a B-25 bomber, because of poor visibility, crashed into the 80th floor of the Empire State Building. Some truthers seem to think that if a skyscraper survived a similar incident the towers should also have.[24]

Rebuttal: The two incidents were very different. Although smaller than the towers were, The Empire State Building is a much heavier building. The Empire State Building is a steel-framed structure with movement-resisting bolted or riveted connections: this means that every joint resists bending moments and wind forces and the load from any failed/ damaged columns can be redistributed, whereas the WTC's steel framed-tube configuration allowed only the exterior wall to resist bending moments due to wind. The Empire State Building's structure can redistribute loads from failed/damaged columns, but the core steel columns of the Twin Towers only supported downward loads.

The B-25 was a twin-engine World War II bomber. It was much smaller and far slower than the Boeing 767 airliners which crashed into the Twin Towers. The B-25 is estimated at 9,750 kg flying 320 kph, versus a Boeing 767-223ER (AA 11) or 767-222 (UA 175) with a mass of at least 90,000 kg flying at 750 kph (or 950 kph) respectively. This would have given the B-25 40 megajoules of kinetic energy on impact, while the AA 11 and UA 175 would have delivered 2 gigajoules and 3 gigajoules respectively, resulting in least 50 times the kinetic energy on impact.[25] Furthermore, the B-25 carried way less fuel than does a modern airliner, which incidentally can carry about one twentieth the energy of a Hiroshima bomb[26] (yes, that is pretty incredible). Finally, the fire in the Empire State Building was different than in the World Trade Center and the FDNY was able to extinguish it before it got out of control.

None of the basic characteristics of a nuclear detonation (intense flash, thermal pulse, observable radial shockwave, emission of nuclear radiation, or electronic devices being fried by EMPs, etc.) were exhibited during the event. The physics departments of NYU, Columbia, Stuyvesant High School, and every other school in the area would have been all over that with Geiger counters, and most of Lower Manhattan would be wiped off the map. (Also, to put it in perspective, the 1988 PEPCON explosion in Nevada was less than a tenth of the size of the Little Boy explosion at Hiroshima in 1945, and not even half the size of the fizzled North Korean nuclear test in 2006. That'd have to be one hell of a small nuke,[note 9] and it doesn't even begin to take into account that the tower collapses started from the impact sites, not the basement.)

The shockwave also would have easily registered on seismic counters all over the world that listen for nuclear testing.

A book has been published suggesting that the Chinese government in Beijing was complicit with the Taliban attack of 9/11. China allegedly used Bin Laden as a surrogate to attack the United States. Various events were cited, problems with an American surveillance plane earlier in the year 2001, a Chinese transport plane coincidentally or otherwise landed in Kabul on the actual day of the 9/11 attacks, the WND suggested Chinese aircraft assisted the Taliban.[27]

A theory put forward by a Dr. Judy Wood claiming that as the planes hit the towers, they were also hit by an energy weapon FROM SPAAAAACE!!![28] Also known for coining the term "dustification." The pseudoscientist Richard Hoagland was so enamored of this theory he went to a conference in Amsterdam (April 2011) and delivered a lecture about Judy Wood's theory for more than two hours. He did not have permission from Wood and he acknowledged her only briefly.[note 10]

Wood guested on Coast to Coast AM on the thirteenth anniversary of the attack, re-iterating her contention that the towers were "dustified." Even George Noory showed a little impatience when Wood said "Well are the towers still there or aren't they?" Noory replied "Are we being silly now?"

Rebuttal: The whole theory is so absurd that another truther debunked it.[29]

There is no conclusive video evidence that any aircraft hit the Pentagon[edit]

Presumably the CIA or whoever had hundreds of people run out and scatter chunks of airplane right after the explosion while not being noticed by anyone...

The one video camera on the scene that was actually trained on the site of the crash was a time-lapse camera that flipped from a vague shot of the beginning of something incoming to a full-blown explosion. 9/11 truthers have argued that without a direct image of an airplane in the security footage, it can't be proven that what hit the Pentagon was actually a plane. They back up this claim by saying that there was no plane visible in the post-crash pictures. Adherents of this theory are sometimes called "no-brainers" "no-planers," though the term has generally come to be associated with the biggest cranks in the movement who believe no planes hit the WTC either.[note 11]

Rebuttal: There were six frames from a security camera showing impact released after a FOIA request.[30] Furthermore, there is photographic evidence of wreckage on the scene and eyewitness accounts of plane wreckage and damage consistent with a plane crash.[31] Essentially, the problem for no-planers is that the plane did not just hit the outside of the Pentagon, but actually penetrated some distance into the structure, some of which actually collapsed on top of the plane. Numerous witnesses saw it approach, the plane's wings took out several light posts on a nearby roadway on the way in, and plane components were scattered all over the Pentagon lawn.

Also, although inconclusive (and "personal commentary"), a photo was presented on a 9/11 truther website claiming that the "round" debris observed was not possibly the wheel of the alleged jetliner. However, it clearly was, albeit stripped of its outer edge.

In any case, why would anyone expect a high-res video camera to be pointed at the exact spot where the plane hit? The intrinsic improbability of such a circumstance would make it direct evidence of a conspiracy, and no self-respecting conspiracy would allow evidence of its existence to remain.

The damage at the Pentagon is not large enough to have been caused by a passenger jet[edit]

Aerial view of the damage to the Pentagon.

Rebuttal: These claims rely on the remote assessment of non-specialists against the on-site investigation of experts on structural engineering. The Pentagon is a reinforced concrete building with blast-resistant windows. It was struck by an aluminum-skinned commercial aircraft that had already lost a wing before hitting the building: such an aircraft is mostly empty space, with voids in the wings for fuel and the fuselage for passengers; only the floor of the passenger compartment, the undercarriage and the engine cores are particularly solid objects. The damage is consistent with this scenario: nobody but truthers would seriously expect a cartoony plane-shaped hole.[32]

If people driving near the Pentagon who apparently were witnesses of the plane actually saw it, it would have blown them off[edit]

Rebuttal: Not proven, and insignificant. (See rebuttal to the next point.)

Rebuttal: The preponderance of evidence suggests that a commercial aircraft hit the Pentagon. An aircraft is known to have gone missing, the wreckage of the same aircraft was found at the Pentagon, and the damage was what structural engineers expected from such a strike. If the alleged conspirators went to this level of effort to create the illusion that a plane had crashed into the Pentagon, why then use a missile? Using a plane would be simpler (as you already have one ready for the task), and there wouldn't be the risk of discovery. Further still, most cruise missiles have payloads that are actually quite small. The jet may well have more kinetic energy than the missile has explosive energy, and the jet also has considerably more energy in jet fuel than its own weight in cruise missiles.

The US Air Force has planes that can hit Mach 3 (2100 mph) in moments. Why weren't they on the scene of the "missing" passenger jet planes?

Rebuttal: This is a charming conceit on behalf of people with a childlike faith in the US military, who cannot possibly imagine how bloated and inefficient an organization with nearly unlimited amounts of money can get.[33] First off, the fastest combat plane in the US Air Force at the time was the Boeing/McDonnell-Douglas F-15 Eagle, which can hit Mach 2.5 tops,[34] so wherever that Mach 3 came from is a bit of a mystery with only one unarmed high-altitude reconnaissance plane in the Air Force ever hoping to achieve that. Secondly, there were only a handful of squadrons on combat alert that day, and even that doesn't mean that the planes are fueled up, armed, and with pilots in them (bored out of their minds).[35] In addition, the speed at which events happened and the often conflicting information made it difficult to organize anything.[36]

The United States Air Force (USAF) keeps its eyes on airspace outside the US, where there is ample time to scramble fighters to stop bombers from that vodka-drinking country: this is done using several massive over-the-horizon radar facilities called the Precision Acquisition Vehicle Entry Phased Array Warning System (PAVE PAWS), with ballistic missile detection also handled by a dedicated radar network called the Ballistic Missile Early Warning System (BMEWS). It falls to the Federal Aviation Administration (FAA) and the FBI to keep their eyes on American skies. Those agencies don't have planes they can scramble. Ever since this day, warplanes ready to defend against this specific sort of attack have been much more common: many of these conspiracy theories imagine the capabilities the US has now were in place then, even though said capabilities were established as a result of 9/11. In addition, upgrades to tracking capabilities have also been put in place allowing the FAA and NORAD to more readily know when something is wrong and intercept quicker.

Flight 93 was shot down and the passengers did not fight back against the hijackers[edit]

Rebuttal: There were recorded phone calls, either made from cell phones or airplane seat-back phones telling what was going on and about what was going down on the airplane. Cockpit voice recorders also picked up the sounds of fighting near the cockpit, and suggest that the hijackers crashed before reaching their destination because they knew they were in danger of being overrun.[37] Furthermore, USAF did scramble two F-16s to intercept Flight 93. However, prior to 9/11 the Air Force did not have armed fighters stationed in the continental United States. This was a leftover from the Cold War, as advanced warning systems would have given ample time to prep fighters to deal with incoming threats from outside the U.S. Keep in mind that prior to 9/11 virtually all skyjacking incidents involving commercial aircraft were for the purpose of hostage-taking. This meant FAA believed that a skyjacked plane would inevitably land somewhere, allowing for negotiations with the hijackers. Using anti-aircraft weapons against such aircraft was not something that the government had even considered.[38]

The two jets scrambled to intercept would have had no choice but to ram United 93 out of the air.[39] This would almost certainly have been a death sentence for the pilot and would have been absolutely guaranteed to destroy the pilot's plane. The pilots returned safe and sound, their unarmed jets intact; hence, United 93 could only have been brought down by those on-board the craft.

Debris was found at a different community called Indian Lake, which, according to conspiracists, is six miles from Shanksville, Pennsylvania.

Rebuttal: The problem is that this is the distance by road, not "as the crow flies". The straight-line distance between the two communities is only about one-and-a-half miles. Debris kicked up in the air does not follow the path that Google Maps would find, but instead goes in a straight line.[40] Ask any crash investigator and they will tell you that debris from a high-speed, steep impact can stretch for miles if an explosion occurred (like when an aircraft loaded with fuel crashes).

ACARS, the acronym for Aircraft Communications Addressing and Reporting System, is a digital datalink system for transmission of short, relatively simple messages between aircraft and ground stations via radio or satellite. A network of VHF ground radio stations ensures that aircraft can communicate with ground end systems in real-time. VHF communication is line-of-sight and provides communication with ground-based transceivers (often referred to as Remote Ground Stations or RGSs). A central router determines the RGS to communicate with the plane. The ACARS log provides, among other information, the following relevant items:
Sending time (day-of-month and exact universal time3)
Aircraft registration number
Three-letter code of the radio ground station (RGS)
Flight number
Departure and destination airports (three-letter codes)
Text of message
Name of sender
Reception time in aircraft (month-and-day and universal time)
Apparently, the last successful communication with Flight 92 happened on 10:10, from an RGS located at Willard Airport. However, the crash time was 10:03 at Shanksville that is nearly 500 miles distant.[41]

The above five people were on record as wanting a "new Pearl Harbor" as a reason to mobilize the US Army into the Middle East in a new hot war to monopolize a huge portion of the global oil supply.

Rebuttal: The "new Pearl Harbor" quote was in reference to modernizing the military and had nothing to do with declaring a war. It stated that progress with modernization would be slow barring an event causing a seismic political shift, it wasn't a statement of intention to create one.[44]

Powerful money/Bush family/military-industrial conspirers did it, all of whom needed a new war in the Middle East for various commercial reasons (oil, arm sales, real estate, precious bodily fluids etc.)[edit]

Rebuttal: While it could easily be said that "they" used 9/11 to create an unrelated Iraq War, they did not blame the Iraqis, but al-Qaeda, which isn't really as convenient if you want to declare war with Iraq and not lose some friends. To quote Bill Maher, "[That Bush had prior knowledge of the 9/11 attacks] is an absurd statement, because it contains the words Bush and knowledge."

It was carried out by Mossad to galvanize US support for Israel and destroy their enemies[edit]

Rebuttal: The story of Mossad allegedly telling Jews to stay home the day of the attack, or that no Jews died in the attack, both of which are false, brought this one forward (the most common of these claims is that 4,000 Jews were warned to stay home).[45] However, as Bush was already one of the strongest supporters Israel has ever had, it is questionable as to why they'd need more of his support.

The idea that the Jews were forewarned may originate in the fact that 9/11 happened to fall at the end of the month of Elul, during the days leading up to Rosh Hashanah, when observant Jews would have additional prayers at their morning prayer services and therefore would likely be late to work. However, given that there were several Orthodox minyanim (prayer groups) organized within the WTC, it is unclear how many, if any, Jews were away from the towers due to prayer services. Then again, if Mossad had wanted to destroy the towers when there were no Jews in them, they could simply have waited a few days until Rosh Hashanah or Yom Kippur, when practically no Jews would have been at work.

The other possible origin of this myth is anti-semitism. Oh! That's it! That's the one!

In 2010, Susan Lindauer self-published a book titled Extreme Prejudice: The Terrifying Story of the Patriot Act and the Cover-Ups of 9/11 and Iraq. In this book, she claims to have been working with the CIA and DIA for years.

Rebuttal: Sources like Wikipedia do not make any mention of these claims outside of the section dedicated to the book. Lindauer may not be sane to begin with, as she was deemed "unfit to stand trial" after refusing to take medicine to aid with a mental illness. This position was reaffirmed two years later.[46]

Another version of the conspiracy theory is that although 9/11 wasn't planned or carried out by the US government, Bush was aware that 9/11 was going to happen and did nothing to prevent it.[47] The most high profile proponent of this theory is former counter terrorism czar Richard Clarke, who says the Bush administration ignored warnings of a likely attack from al-Qaeda. This was however to suggest (with considerable validity) that the Bush administration was incompetent in its pre-9/11 security preparations rather than to accuse them of intentionally letting the attack happen.[48]

Rebuttal: It is known that Condi received a memo entitled "Bin Ladin determined to attack inside the U.S." on August 6, 2001, but this memo discussed the threat in a general way and made no mention of the specific individuals who carried out the 9/11 attacks.[49] Nevertheless, the existence of this memo, Bush's reported flippant response "you've covered your ass, now" and the fact that it was not declassified until years later have contributed to the aura of foreknowledge and coverup.

This "argument" relies, primarily, on interpreting architecture and symbolism within US culture as indicating that a conspiracy was openly declared for decades and part of some unknown secret plot by an illustrious and secretive elite society that has been alleged to be anything from protean space lizards who have been ruling the world for centuries to a cadre of rich guys who hang out in the woods every summer.[50] These often include references to the Twin Towers as being constructed as symbolic of Solomon's twin pillars, Boaz and Jachin (which is an important symbol in Freemasonry as well as other esoteric literature such as tarot cards[51]). Various premonitory events such as The Simpsons featuring a picture of the twin towers with the number 9 next to it[52] or The Dude in The Big Lebowski signing "September 11th" on a check[53] are cited to "prove" that someone has been secretly dropping clues for decades that 9/11 was going to happen. Other alleged examples include the pilot episode of The X-Files spinoff The Lone Gunmen, which deals with the titular characters preventing such an apparent false flag event and aired six months prior to the attack. Unlike other conspiracy theories, these theorists do not typically reference the actual events surrounding 9/11, but instead point out symbolic indications claiming that it was "foretold."

Rebuttal: As with all forms of pareidolia and confirmation bias pointing out examples where the Twin Towers show up is not evidence given that the Twin Towers were, in and of themselves, highly recognizable buildings, and, therefore likely to be included in multiple forms of literature, especially when referencing New York City. Additionally, it seems highly unlikely that anyone plotting mass murder on the scale witnessed during the WTC attacks is going to tell anyone about it in advance.

There are 28 pages of the Joint Inquiry into Intelligence Community Activities before and after the Terrorist Attacks of September 11, 2001 that are still classified; it is said that among the information contained in the documents (by those who viewed them) is which country played a role in complicity to the attacks. A bi-partisan bill, House Resolution 428, proposes to declassify these documents.[55] It would be overdue by President Obama who promised this to the victim's families back in 2008.

What's likely holding it up is the foreign policy repercussions. It should not be surprising to anyone which country it is.[56]

By far the most destructive of all of the conspiracy theories, and somehow the only one that's not consistently referred to as a conspiracy theory, even though it literally is.

The reality is there was a mutual hatred between Al-Qaeda and Saddam, with the former openly offering their services to Saudi Arabia prior to the 1991 Gulf War, and the latter having his relations with Saudi (and their proxies) permanently soured by Saudi's participation in said war. Furthermore, Saddam's society was ruthlessly anti-Islamist, cracking down on all forms of political Islam within the country and responding with torture and mass executions when they emerged. The society was also secularized to a large extent, with Saddam abolishing shariah courts and allowing very un-Islamic institutions such as breweries and distilleries to thrive in Iraq. Saddam, in fact, once joked that Iraq's national drink was Johnny Walker Blue Label. Therefore, ideologically and in practice, Saddam and his Baathist comrades were diametrically opposed to Al-Qaeda's extremist salafism. bin Laden spent a not insignificant amount of time condemning Saddam, remarking "the land of the Arab world, the land is like a mother, and Saddam Hussein is fucking his mother" to his biographer. bin Laden also supported extremist groups in the Kurdish regions of Iraq, such as Ansar al-Islam and it's predecessor the Kurdistan Islamic Movement. This was all well known in intelligence circles, yet the idea of Saddam's connection to Al-Qaeda and 9/11 was relentlessly pushed by the Bush Administration in the run up to the Iraq war.

In the end, even the CIA and Pentagon were forced to admit that no link between Saddam and Al-Qaeda existed, with Larry Wilkerson, Colin Powell's chief of staff remarking to Voice of America:
"Saddam Hussein had his agenda and al-Qaida had its agenda, and those two agendas were incompatible. And so if there was any contact between them, it was a contact that was rebuffed rather than a contact that led to meaningful relationships between them."

Yet more damning were statements from National Security Council counter-terrorism directors Daniel Benjamin and Steven Simon, who said: "The administration pressed its case for war most emphatically by arguing that U.S. national security was imperiled by Saddam's ties to al-Qaeda. The argument had the obvious virtue of playing to the public's desire to see the war on terrorism prosecuted aggressively and conclusively. Yet, scant proof of these links was presented. The record showed a small number of contacts between jihadists and Iraqi officials. This was treated as the tip of an unseen iceberg of cooperation, even though it fell far short of anything that resembled significant cooperation in the eyes of the counterterrorism community—as it always had. No persuasive proof was given of money, weaponry, or training being provided."

Abu Suhail, an al-Qaeda member and writer denounced the "Inside Job" theory as a lie perpetrated by the Iranian government to undermine perceptions of al-Qaeda's global presence and effectiveness as a fighting force against the West.[57] Funny that the conspirators themselves have been motivated to fight the Truther movement, believing the Truthers have stolen their thunder.

The Plasco Building collapse must have a controlled demolition, too[edit]

Ruins of the collapsed Plasco Building in Tehran.

Truthers had it pretty easy from 2001–2016, with everyone agreeing that no steel skyscraper had ever collapsed due to fire before 9/11. But when the Plasco Building in Tehran, Iran collapsed to the ground in January 2017, things got a little awkward for conspiracy believers. The 9/11 profiteering group Architects & Engineers for 9/11 Truth was forced to immediately put out a press release, hilariously suggesting that Plasco, too, could have been a controlled demolition.[58] Well, the collapse was investigated, and shockingly, that case was actually a collapse due to fire, too… who knew? Keep hope alive!

A number of al-Qaeda members conspired to hijack some planes and attack some buildings[edit]

Al-Qaeda had become a suspect for the attack within the day of the attack, because of the 1998 Embassy bombings and some intercepted phone calls.[59] Taliban was threatened with war if it does not extradite Bin Laden. [60] At this point, Osama Bin Laden denied responsibility, hoping that the USA will go away.[61][62] The effect? Nothing. In October 2001, the USA initiated military hostilities against the Taliban.[63] Osama Bin Laden, and his organization took responsibility for the attack in October 2001 and also in a letter to America in 2002.[64][65]

A videotape found in a bombed house in Jalalabad, November 2001, showed Osama Bin Laden talking to one Khalid al-Harbi about the attack. In it, he says, 'The brothers, who conducted the operation, all they knew was that they have a martyrdom operation and we asked each of them to go to America but they didn't know anything about the operation, not even one letter. But they were trained and we did not reveal the operation to them until they are there and just before they boarded the planes.'.[64] This, however, contradicts an email sent by hijacker Saeed al-Ghamdi to 20th hijacker who failed to enter USA, Ramzi bin al-Sibh. 'The first semester commences in three weeks. Two high schools and two universities. … This summer will surely be hot ...19 certificates for private education and four exams. Regards to the professor. Goodbye.' Certificates mean hijackers, exams mean planes, 'high schools' and 'universities' refers to targets. [66]

An Internet phenomenon, Loose Change, an amateur documentary advocating 9/11 conspiracy theories, was a huge hit on Google Video and beyond, and is one of the rare examples of an amateur Internet film to have made the leap to the mainstream media, going on to be broadcast in the UK. It advances many of the most popular conspiracy theories about 9/11.

Truthers like to cite false flag operations that never actually happened or weren't actually false flags as "precedent" for the 9/11 conspiracy, though even citing real false flag operations would not constitute evidence that 9/11 was a false flag:

The Spanish Didn't Sink the USS Maine

Rebuttal: The Hysteria around the Maine Explosion was mostly engineered by privately owned companies not affiliated with the US Government. One could also say that it happened a long time ago I guess.

Rebuttal: This made it into the second cut of Loose Change, which alleges that a plan to blow up drone planes as part of a false flag operation to justify the invasion of Cuba is a precedent for a 9/11 false flag. This plan was proposed by a few members of JFK's Department of Defense. JFK and Secretary of Defense Robert McNamara dismissed it as batshit crazy. If anything, this is a precedent for the president discounting such false flags.

Rebuttal: There were two Gulf of Tonkin incidents involving the USS Maddox in 1964. In the first, the Maddox did engage with North Vietnamese torpedo ships. In the second, the Maddox mistakenly reported itself as being under attack. This incident was massively exaggerated by LBJ to justify the escalation of the Vietnam War, but it wasn't a false flag operation.

“”Within eight months of taking office, President Bush planned and executed the largest terrorist attack on U.S. soil with the full cooperation (and unbroken silence) of the U.S. military, intelligence community, and airline industry. Eight months.

The second problem is that if BushCo did stage the 9/11 attack, their failure to place the blame directly on Saddam Hussein's regime is rather baffling, since their alleged main "use" of 9/11 was to force the US into war with Iraq.

Apart from all the problems regarding means and opportunity to plant hidden explosives in the buildings, there's also the question of the motivation for those particular means. Presumably, a "hypothetical" situation in which jetliners hit the buildings and no bombs were involved (i.e., the real situation) would have caused quite a lot of damage, killing many people and searing into the minds of Americans an image of two buildings attacked by terrorists. So why would the conspirators bother with bombs in addition to jetliners? (Alternatively: why bother with jetliners in addition to bombs?)

Truther answers vary. Only a few of their arguments actually suggest any relevant differences between the known scenario and what they imply would have been observed in a bomb-free one. One difference is that the towers fell straight down into their own footprints (as opposed to sideways, or just the tops flying off by themselves). Another is that their speeds approached free-fall. In short, we are supposed to believe that the conspirators would not have accomplished their goals without the buildings falling quickly and straight down.[68] (Stupid gravity.)

This point does not apply to non-controlled-demolition conspiracies, but the CD hypothesis has managed to dominate to the point of being synonymous with trutherdom. Why? Perhaps because controlled demolition offers more hope of an un-dismissible smoking gun than the mere LIHOP argument ever could. (Any scenario where the buildings came down per the mainstream view is one that could only be exposed by a paper trail, confessions, etc, but physical evidence like bombs would seal the deal.) Ironically, though, it is almost the least plausible of the theories (though space-beams and hologram-planes show us that one can always find a wealthier stash of crazy somewhere else).

Of course, the "Why?" problem is not an ironclad argument even if it has no answer, because (hypothetically) sufficient evidence in favor of bombs would confirm that bombs indeed had been planted. Say, if C-SPAN captured footage of a famously-sane Senator Jon Doe suddenly meowing like a cat, the fact that no one can provide a rational reason for his doing so would not somehow disprove the assertion that Smith meowed. Likewise, maybe the conspirators just like planting bombs.

In fact, maybe the purpose of the bombs was to draw in the conspiracy-theory crowd like moths to a flame: any subsequent "truth movement" would be unable to resist making themselves look ridiculous by constantly talking about something as absurd as redundant explosives! As phrased by a character in a truther-parodying dialogue in LessWrong which satirically suggests that controlled demolition ideas are in fact an instance of "disinformation" by the real conspiracy: "I don't suppose we actually planted some explosives, just to make sure...?"[69]

The Philippine National Police discovered the plot of what became 9/11 in 1995, only to be ignored. The Al-Qaeda, who were testing ways for the terrorist attack to work out, was clearly the mastermind of it.[70]

23 Sep 2010: "Delegates from the US and European countries walked out of the UN's General Assembly hall during Mahmoud Ahmadinejad's speech when the Iranian president claimed 'most nations' believed the US government was behind the September 11 attacks."[71]

A freakishly large number of truthers are shamelessly anti-Semitic, blaming various US neoconservatives (come on, people), property owner Larry Silverstein, and the Mossad for planning/covering up the attack. Many truthers also seem to be of the opinion that a group of Ay-rabs couldn't have planned an operation this complex, a slightly (but only slightly) more subtly racist attitude reminiscent of Erich von Däniken, Orientalism and a host of other "[insert group here] couldn't possibly have done X (subtext: because they are too ignorant/uncivilized)"-claims.[note 12]

Technological illiteracy is a frequent theme as well — the invention of fanciful devices such as "thermite straps" to cut vertical girders for example (thermite is very hard to direct and usually burns straight down), "quiet" explosives, very-low-yield nuclear weapons, and even undetectable holographic projectors (favored by some of the no-planers) all figure into theories put forth by truthers. Outright lying is not unusual as well; for example, claims of no plane parts on the lawn of the Pentagon were directly refuted by eyewitnesses.

Truthers also seem to have a thing for digging around in the statistical noise, misinterpreting photo artifacts and other random bits of data[note 13] and even taking operational jargon (such as the infamous "pull it" command that was used to order the evacuation of WTC 7) out of context, while avoiding things like the fact that steel doesn't have to melt to bend, that office fires can be much hotter than just a kerosene fire, or the fact that there was a 20-story gash in the side of WTC 7 after the tower collapses that seriously compromised its structural integrity. In fact, the entire truther thought process is very much akin to quote mining. Who'da thunk.

At the conservative end of the truther spectrum are LIHOPers (short for "Let It Happen On Purpose," in contrast to MIHOPers for "Made It Happen On Purpose"[note 14]) who believe US intelligence agencies had data on the coming attacks prior to September 11th, 2001, which the administration willfully ignored, but whose direct involvement was limited to (at very most) diverting defenses that might have interfered with the attack. Still dumb. The least indulgent of the truthers speculate that the 9/11 attacks were planned and carried out by Osama Bin Laden, disgruntled associate of the Saudi Royal family, and a cadre of veteran mujahideen, and not a lone, nondescript terrorist who single-handedly hijacked and piloted all four planes to their targets.

A small but prolific number of truthers even go so far as to claim the planes were holographic.[72]

Of course, some truthers simply don't like America and/or the American government and are very much willing to believe anything which discredits them. In other words, they are just confirming their own bias.

In a 2011 survey of 15- to 30-year-old men in Afghanistan's Kandahar and Helmand provinces by the International Council on Security and Development, 92% of those interviewed said that they had never heard of "this event which the foreigners call 9/11."[73] Perhaps they would answer otherwise if the event was described to them.

1973 - The Pinochet coup d'état against the democratically elected socialist President of Chile, Salvador Allende (who died during the bombing of La Moneda Palace, allegedly by suicide), which installed a brutal and repressive military dictatorship in his place. You know, the one that right wing "libertarians" are constantly obsessing over with those "free helicopter ride" memes.

2001 - Albums released on the day of the attacks include Bob Dylan's Love and Theft, Nickelback's Silver Side Up, Jay-Z's The Blueprint, Slayer's God Hates Us All, Nick Lowe's The Convincer, and Ben Folds' Rockin' the Suburbs. The original release of prog rock group Dream Theater's live album Live Scenes from New York also occurred the day of the attacks, and had a piss take on the Sacred Heart referred to as the Flaming Apple, which included the Twin Towers.[75] Yesterdays New Quintet released their debut LP, AnglesWithoutEdges, produced by Madlib, on September 11th, 2001. New York anti-folk group The Moldy Peaches' self-titled album, which coincidentally contained the track "NYC's Like a Graveyard" was also released this day.

2009 - 21st of Ramadan, a significant Muslim holy day in commemoration of the martyrdom of Imam Ali, happened to be on September 11th in the year 2009.[76]

↑The remainder of the Pentagon held up quite well, because at the time it was constructed it was intended for use as a library, which requires a sturdier structure than an office building.

↑WTC 7 contained several large tanks of diesel fuel stockpiled by New York City's emergency management agency, and the main towers were still on fire at the time of their collapses.

↑Pictures of damage to WTC 7 and "pull it" explanation at Debunking 9/11 and this video showing the penthouse collapse and uneven implosion that is not characteristic of a controlled demolition.

↑Something would have to hold the burning thermite up — without itself melting or shattering at temperatures in excess of 4000 K — for it to remain in any one place on a vertical surface. Such highly refractory materials exist, but they are quite expensive and the procurement of large numbers of unusually-shaped items made from them would inevitably have been remarked upon.

↑Large aircraft tend to contain sizable quantities of aluminum, and aluminum is a reactive metal which forms an oxide coating in air to prevent further corrosion. In addition, the cladding of the two main WTC towers was aluminum. Not finding aluminum oxide in the wreckage would be somewhat more surprising, given it would require an enormous amount of already present material to have vanished.

↑Under the unrealistic assumption of 100% packing density, this would mean about 24 cubic meters of thermite; including packaging, this would approximately fill up a 20' shipping container. But for proper reaction, thermite cannot be a solidly-packed block; it has to be a fairly loose powder, meaning that the actual volume would be about twice as high. See Debunking 9/11 for the math.

↑Sub-kiloton "suitcase" nukes may exist, though the facts on the matter aren't well known; even so, the decay products would've been easily detectable.

↑The audio of Hoagland's Amsterdam performance has since been deleted, but the lecture info can be found on this crazy site.